Revolutionary patented design expands from 2 in. to 3-1/2 in. for in-use needs Heavy duty die-cast metal construction with premium powder coat Quick-Fit keyhole mounting system allows installation in under a minute Universal Fit Adapter System Technology (U-Fast) for 8-in-1 custom device configurations, comes pre-configured for GFCI Lockable open or closed and fits fullsize padlock Includes attached gasket and mounting hardware Extra Duty rated